Conciseness

The R-specific guide is lean and all content is Windmill-specific knowledge Claude does not already have, but the CLI/metadata half is noticeably redundant: the deploy-only-on-explicit-request rule appears four times (lines 15, 19, 26, 45) and the 'generate-metadata is not a deploy' clarification three times (lines 14, 33, 45). This fits anchor 3 ('mostly efficient but includes some unnecessary explanation or could be tightened'); the repetition of identical rules pushes it below anchor 4 but the absence of known-concept padding keeps it above anchor 2.

Actionability

Fully executable throughout: concrete commands ('wmill script preview <script_path>', 'wmill generate-metadata --dry-run', 'wmill generate-metadata rehash', 'wmill resource-type list --schema'), complete copy-paste R examples, per-language placeholder syntax for args ('$1 for PostgreSQL, ? for MySQL/Snowflake, @P1 for MSSQL'), and decision rules keyed to exact user phrases. Only 'Place scripts in a folder' is underspecified, which is too minor to drop it from anchor 5.

Workflow Clarity

Decision rules (preview vs run vs sync push) are explicit with concrete trigger phrases, and real validation checkpoints exist: --dry-run lists stale items with reasons before regenerating, regenerated locks are diffed and version bumps reported, and preview validates before any deploy. However, the workflow is organized topically rather than as a linear sequence, and the repeated rules scatter the same step across four sections — anchor 4 ('clear sequence with most checkpoints present; minor validation gaps') rather than the fully sequenced/checklisted form of anchor 5. Deploying mutates remote state, but it is gated behind explicit user request and prior preview validation, so no destructive-operation cap applies.

Progressive Disclosure

No bundle files exist, so everything is inlined in SKILL.md. Section headers provide structure, but roughly half the body is language-agnostic Windmill material (CLI commands, general principles, TypeScript/Python preprocessors) inlined in an R-specific skill — content that belongs in a shared reference file. References to 'AGENTS.wmill.md' and the 'preview' skill point outside the skill without clear signaling, and the heading hierarchy is inconsistent (## sections precede two # H1s). Anchor 3 ('some structure but could be better organized; references present but not clearly signaled; content that should be separate is inline') is the best fit.

Specificity

The description names the domain ("writing R scripts") but states no concrete actions whatsoever — nothing about Windmill, script structure, parameters, preview, or metadata generation. It is not entirely vague like 'Helps with documents' (1), but it lacks even the 1-2 concrete actions needed for anchor 3.

Completeness

The description is only a 'when' clause ("MUST use when writing R scripts") with no 'what' at all — the skill's purpose (Windmill R script authoring, running, metadata sync) is completely unstated. This exactly matches anchor 2 ('only when is present without what', cf. 'Use when working with documents'): the specific 'when' rules out 1, and the total absence of a 'what' rules out 3.

Trigger Term Quality

"writing R scripts" is a phrase a user would naturally say, so a relevant keyword is present, but there are no common variations or synonyms (".R files", "R code", "Windmill", "R language"), matching anchor 3. It is more natural than the generic one-two keywords of anchor 2, but far from the synonym-and-extension coverage of anchor 5.

Distinctiveness Conflict Risk

"Writing R scripts" is a specific language niche, but without 'Windmill' scoping it would trigger for any R script request, overlapping generic R-programming skills or sibling Windmill language skills. Anchor 3 ('somewhat specific but could still overlap with similar skills') is the best fit; anchor 4 would require the distinct trigger scoping that is missing.